The Difference Between Presumptive and Confirmatory Data in Specimen Identification

The difference between presumptive and confirmatory data in specimen identification is that

A) presumptive data affords a preliminary identification such as the genus, and confirmatory data identifies the species of the organism.
B) presumptive data is an educated guess whereas confirmatory data identifies the specific genus and species of the organism.
C) presumptive data is more accurate than confirmatory data.
D) presumptive data identifies the species, and confirmatory data identifies the genus of the organism.